This article describes what a PPSX file is and how it differs from the more common PPTX file. We'll also look at how to open a PPSX file for viewing or editing, and how to convert it to another format that's easier to use.
Save a presentation as a slide show (.ppsx file format)
A file with the PPSX file extension is a Microsoft PowerPoint slide show. It serves as an update to PPS, a format used for the same purpose in MS Office versions 2007 and earlier.
These files open directly into the presentation because they are only meant to present the slide show. PowerPoint files that open directly into editing mode are saved with the PPTX extension.
PPSX files use XML and ZIP to organize and compress the different parts of the file, much like Microsoft's DOCX and XLSX file formats.
